$ (function () {
	$ ("div#main-content div.all ul.button li:nth-child(1) a").hover (function () {
		$ ("div#main-content div.map ul li.akasaka a img").each (function () {
			this.src = this.src.replace (/\.(gif|jpg)$/, "_hover." + "$1");
		});
	}, function () {
		$ ("div#main-content div.map ul li.akasaka a img").each (function () {
			this.src = this.src.replace (/_hover\.(gif|jpg)$/, "." + "$1");
		});
	});
	$ ("div#main-content div.all ul.button li:nth-child(2) a").hover (function () {
		$ ("div#main-content div.map ul li.shinnbashi a img").each (function () {
			this.src = this.src.replace (/\.(gif|jpg)$/, "_hover." + "$1");
		});
	}, function () {
		$ ("div#main-content div.map ul li.shinnbashi a img").each (function () {
			this.src = this.src.replace (/_hover\.(gif|jpg)$/, "." + "$1");
		});
	});
	$ ("div#main-content div.map ul li.akasaka a").hover (function () {
		$ ("div#main-content div.all ul.button li:nth-child(1) a img.hover").each (function () {
			this.src = this.src.replace (/\.(gif|jpg)$/, "_hover." + "$1");
		});
	}, function () {
		$ ("div#main-content div.all ul.button li:nth-child(1) a img.hover").each (function () {
			this.src = this.src.replace (/_hover\.(gif|jpg)$/, "." + "$1");
		});
	});
	$ ("div#main-content div.map ul li.shinnbashi a").hover (function () {
		$ ("div#main-content div.all ul.button li:nth-child(2) a img.hover").each (function () {
			this.src = this.src.replace (/\.(gif|jpg)$/, "_hover." + "$1");
		});
	}, function () {
		$ ("div#main-content div.all ul.button li:nth-child(2) a img.hover").each (function () {
			this.src = this.src.replace (/_hover\.(gif|jpg)$/, "." + "$1");
		});
	});
});